Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 1 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/13/2024   10:17:13   (   0.02,-137.00) (  -0.65,-133.87)  355.64                80
 01/14/2024   22:41:49   (  -0.03,-136.99) (  -0.54,-139.17)  249.47                80
 01/15/2024   22:20:24   (  -0.03,-136.98) (   0.52,-134.65)  266.95                80
 01/17/2024   10:44:50   (   0.03,-136.98) (   0.68,-139.90)  332.79                80
 01/18/2024   10:23:25   (   0.03,-136.98) (  -0.32,-135.37)  183.36                80
 01/19/2024   22:48:00   (  -0.04,-136.96) (  -0.86,-140.67)  422.52                80
 01/20/2024   22:26:35   (  -0.04,-136.95) (   0.15,-136.13)   93.20                80
 01/23/2024   10:29:36   (   0.05,-136.92) (   0.03,-136.85)    7.73                80
 01/25/2024   22:35:24   (  -0.06,-136.87) (  -0.24,-137.61)   83.92                80
 01/26/2024   22:13:59   (  -0.06,-136.86) (   0.78,-133.07)  431.22                80